diff options
| author | Andi Kleen <ak@suse.de> | 2008-01-30 13:32:39 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:32:39 +0100 |
| commit | 6d63de8dbcda98511206897562ecfcdacf18f523 (patch) | |
| tree | f845f109636c3cc7eddad455b89ffb986a1188d0 /arch/x86/kernel/tsc_64.c | |
| parent | f06e4ec1c15691b0cfd2397ae32214fa36c90d71 (diff) | |
x86: remove get_cycles_sync
rdtsc is now speculation-safe, so no need for the sync variants of
the APIs.
[ mingo@elte.hu: removed the nsec_barrier() complication. ]
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/tsc_64.c')
| -rw-r--r-- | arch/x86/kernel/tsc_64.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86/kernel/tsc_64.c b/arch/x86/kernel/tsc_64.c index 3723401c459..2cc55b726c2 100644 --- a/arch/x86/kernel/tsc_64.c +++ b/arch/x86/kernel/tsc_64.c @@ -181,12 +181,12 @@ static unsigned long __init tsc_read_refs(unsigned long *pm, int i; for (i = 0; i < MAX_RETRIES; i++) { - t1 = get_cycles_sync(); + t1 = get_cycles(); if (hpet) *hpet = hpet_readl(HPET_COUNTER) & 0xFFFFFFFF; else *pm = acpi_pm_read_early(); - t2 = get_cycles_sync(); + t2 = get_cycles(); if ((t2 - t1) < SMI_TRESHOLD) return t2; } @@ -210,9 +210,9 @@ void __init tsc_calibrate(void) outb(0xb0, 0x43); outb((CLOCK_TICK_RATE / (1000 / 50)) & 0xff, 0x42); outb((CLOCK_TICK_RATE / (1000 / 50)) >> 8, 0x42); - tr1 = get_cycles_sync(); + tr1 = get_cycles(); while ((inb(0x61) & 0x20) == 0); - tr2 = get_cycles_sync(); + tr2 = get_cycles(); tsc2 = tsc_read_refs(&pm2, hpet ? &hpet2 : NULL); @@ -300,13 +300,13 @@ __setup("notsc", notsc_setup); /* clock source code: */ static cycle_t read_tsc(void) { - cycle_t ret = (cycle_t)get_cycles_sync(); + cycle_t ret = (cycle_t)get_cycles(); return ret; } static cycle_t __vsyscall_fn vread_tsc(void) { - cycle_t ret = (cycle_t)vget_cycles_sync(); + cycle_t ret = (cycle_t)vget_cycles(); return ret; } |